[Q] SuperUser ForceCloses Xperia neo V

Hello guys plzzzzzzzzzzzzzzzzzzzz help me.
I changed build prop and now get force close on alot of applications.
Problem is that Superuser is also force closing so I can't reverse the changes.
Every root app is closing because super user denied root access.
Many people here said that u need cwm installed to use recovery.
I have X-Parts but app force closes.I have a backup of build prop made from romtoolbox.
I don't know how to put it back.Superuser doesn't allow root.I found a small root file manager but it requires root so I can save the changed buildprop file.Don't know if Adb will work because I don't have a good cable.
If only there is a adb wireless which doesn't force close.

Plz people help me .
I don't want people to view my post but also reply
PLZZZZZZZZZZZZZ HELLPPPPPPPPPPP

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